Twin newborn girls allegedly stolen by a maternity doctor in a baby trafficking scandal in northwest China were returned to their parents over the weekend.

Surrounded by reporters and photographers, police handed the two infants back to their parents at Fuping County Hospital in Shaanxi province late on Saturday. The twins' father, Qi Kunfeng, presented a banner to thank police for recovering the babies, while their mother, Wang Yanyan, wept.

"They're all healthy and well. I just hope we can live happily together as a family ever after," Qi told CNN by telephone on Monday.

"It's a big surprise for my wife. She can't eat and sleep well because of over excitement."

The twins were allegedly separated and sold to two families by a doctor named Zhang Shuxia, the deputy director of the maternity department in the Maternal and Child Health Care Hospital in Fuping County.

Mother Wang Yanyan did not see the twins after their birth

Zhang had told the parents that the twins had serious health issues and persuaded them to give them up after their birth on May 29.

"The doctor was pretending to be very anxious, telling me that my babies have congenital problems. She said the twins would be brain damaged or paralyzed," said the mother.

She never saw her children after the birth: "I insisted on seeing the babies, but she wouldn't let me," said Wang.

The new parents trusted Zhang: "I never suspected that she was selling my babies, because she was a family friend," she said.

The twins' father told CNN that the loss of the children had a profound impact on the couple.